page size differs in LATEX output of pdf document

I am having the pdf output generated via latex but the first page size is bit broader despite having described the parameters in the preamble of the document. See image.

documentclass[12pt]{article}
usepackage[utf8]{inputenc}
usepackage[a4paper, inner=3cm, outer=3cm, top=3cm, bottom=3cm, bindingoffset=2cm]{geometry}
setlength{parindent}{0pt}
setlength{parskip}{1em}
usepackage[dvipsnames]{xcolor}
usepackage{hyperref}
usepackage{soul}
usepackage{amsmath}
usepackage{microtype}
usepackage[english]{babel}
usepackage[stable]{footmisc}
definecolor{mblue1}{rgb}{.2,1,1}
sethlcolor{mblue1}


title{Notes on Computational International Studies
    large Conceptual Ideas}
author{Writings Extracted from Many Sources}
date{January 2021}

begin{document}
    sloppy
    maketitle
    tableofcontents
    clearpage
......
end{document}

Additionally, just to clarify the pdf viewer I am using is Okular in Manjaro Linux. Even margins are distorted.

Also, the Foxit pdfviewer in windows platform gives no distortion. So, is it a Linux specific problem?